How do u think about smoking bans?

As we all know, smoking is harmful to health, especially for people who didn't smoke,so maybe u will say it's right, we should do something to protect our environment and keep our children healthy, from the point of social welfare, smoking bans or alcohol bans is absolutely right, but, do u think it's fair to sacrifice the interests of the few just for the good of majority? 

Do u think it's necessary to read the book after seeing the film version? Some books are really worth reading and they are more fascinating than the film version, like Harry Potter, I saw the film first and then I read the book, recently I saw a film named The Fault In Our Stars, I really like it ,so when I knew it was translated from a book, I start thinking about if it's nexessary to read it as I already knew the story, and I'm not sure if the book can be more touching than the film? So how do u guys choose when u don't have so much time?

How do u make new friends from different countries? Exchange or traveling? I mean most people like me don't have that chance，go abroad is not an easy thing for me who is a poor student under heavy schoolwork, so is there other ways to make friends with people from different culture?

How can I improve my spoken English quickly? I can always got a good grade in English exams because my reading and writing are good, but if I want to work abroad, my English is not enough,I realized that I always get a little nervous and speakless when I talk with strangers especially foreigners in English, so I have to get over it, but how?